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bug#26396: 25.1; char-displayable-p on a latin1 tty

From: Paul Eggert
Subject: bug#26396: 25.1; char-displayable-p on a latin1 tty
Date: Sun, 16 Apr 2017 20:26:01 -0700
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:45.0) Gecko/20100101 Thunderbird/45.8.0

Kevin Ryde wrote:

Debian has an easy line in /etc/default/console-setup.  The default is
now utf8 but there's lots more.  I have it latin1.

In that case I stand corrected: some people are stull using non-UTF-8 Linux consoles. I don't know of any convenient programmatic way for Emacs to determine whether the console is in UTF-8 output mode, though. (I can think of complicated ways, involving outputting bytes to the screen and seeing what happens to the cursor position; but this would be destructive to the screen contents.) I agree Emacs shouldn't be changing the mode.

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